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Installing System Components 63
System Board (Service-Only Procedure)
Removing the System Board
CAUTION: Only trained service technicians are authorized to remove the system cover and access any of the
components inside the system. See your Product Information Guide for complete information about safety
precautions, working inside the computer, and protecting against electrostatic discharge.
1
Turn off the system and attached peripherals, and disconnect the system from the electrical outlet.
2
Open the system. See "Opening and Closing the System" on page 38.
3
Disconnect any cables from the system board back panel.
4
Remove the cooling shroud. See "Removing the Cooling Shroud" on page 39.
5
Remove the expansion-card riser from the system board. See "Removing an Expansion-Card Riser" on
page 58.
6
Disconnect the two fan module power cables from the system board. See Figure 3-5.
7
Remove the power supply. See "Removing the Power Supply" on page 42.
8
If applicable, disconnect the optical drive cable from the system board. See Figure 6-2.
NOTICE: Do not pull on the cable to unseat the connector. Doing so can damage the cable.
a
Squeeze the metal tabs on the ends of the cable connector.
b
Gently work the connector out of the socket.
9
Disconnect the control panel cable from the system board. See Figure 6-2.
NOTICE: Do not pull on the cable to unseat the connector. Doing so can damage the cable.
a
Squeeze the metal tabs on the ends of the cable connector.
b
Gently work the connector out of the socket.
10
Remove the system board:
a
Pull the system-board release pin. See Figure 3-16.
b
While pulling the release pin, slide the system-board tray toward the front of the chassis.
c
Lift up the system-board tray and remove it from the chassis.
CAUTION: The memory modules and processor heat sink are hot to the touch for some time after the system has
been powered down. Allow time for these components to cool before handling them. Handle the memory modules
by the card edges and avoid touching the components on the memory module.
NOTE: While removing the memory modules, record the memory module socket locations to ensure proper
installation.
11
Remove the memory modules. See "Removing Memory Modules" on page 49.
12
Remove the heatsink(s) and microprocessor(s). See "Removing a Processor" on page 50.